How to trim a string to N chars in Javascript?
Why not just use substring... string.substring(0, 7); The first argument (0) is the starting point. The second argument (7) is the ending point (exclusive). More info here.
var string = "this is a string";var length = 7;var trimmedString = string.substring(0, length);
Copying Will's comment into an answer, because I found it useful:
var string = "this is a string";var length = 20;var trimmedString = string.length > length ? string.substring(0, length - 3) + "..." : string;Thanks Will.
And a jsfiddle for anyone who cares https://jsfiddle.net/t354gw7e/ :)
I suggest to use an extension for code neatness.Note that extending an internal object prototype could potentially mess with libraries that depend on them.
String.prototype.trimEllip = function (length) { return this.length > length ? this.substring(0, length) + "..." : this;}And use it like:
var stringObject= 'this is a verrrryyyyyyyyyyyyyyyyyyyyyyyyyyyyylllooooooooooooonggggggggggggsssssssssssssttttttttttrrrrrrrrriiiiiiiiiiinnnnnnnnnnnnggggggggg';stringObject.trimEllip(25)